Novak neighbor income

Mr. Smith earns as many euros in half a year as his neighbor in 4 months. The neighbor earns 420 euros more per month than Mr. Smith. What is the monthly income of Mr. Smith?

Final Answer:

n =  840 eur

Step-by-step explanation:

$$\begin{gathered} 6n=4s \\ s=420+n \\ 6n=4(420+n) \\ 6\cdot n=4\cdot (420+n) \\ 2n=1680 \\ n=\frac{1680}{2}=840=840\text{eur} \\ n=840 \\ \text{ Verifying Solution: } \\ s=420+n=420+840=1260\text{eur} \end{gathered}$$

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